A source said: "Nathan and Cara have always had a fiery relationship with plenty of ups and downs.

"But their latest bust-up is their biggest yet and it'll be tough for them to come back from this."

The source is hopeful they'll get back together, though, as they added to The Sun: "They both still love each other, there's no getting away from that. Perhaps after a break they can reconnect again."

ITV

CHAMPS: Cara and Nathan won Love Island last year

Love Island's sex scenes

Warning, this may contain scenes of a sexual nature. A couple of weeks on Love Island doesn't stop the islanders indulging in intimate play before bed. Check out this gallery on all the sex scenes performed so far

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ITV2

Alex Bowen enjoys a quick massage before sleep

It was only on Wednesday that the Love Island champs made another appearance on TOWIE when they popped along to Tommy Mallet and Georgia Kousoulou's St Paddy's Party.

This is one of a handful of cameos, coming onto the show and starring alongside their pals Tommy and Georgia.

Some of their Love Island co-stars have stayed together – Alex and Olivia, Scott Thomas and Kady McDermott, and Rykard Jenkins and Rachel Fenton.

ITV

CAMEO: Nathan and Cara made another appearance on TOWIE last week

Love Island Babes 2017

Love Island will see a stunning cast engage in the ultimate game of love, as they land in a sunshine paradise in search of passion and romance.